Imagine there was a service where people could, temporarily or permanently, trade bodies with another person. Memories and personality would remain intact (as would learned knowledge) but physical skills and abilities would be traded - including mental elements like synesthesia, or photographic memory. How would your MC write a personal ad for such a system? What would they be looking for, and how would they advertise themselves for potential swappers? Here's an example: Young dancer looking for musician/perfect pitch (temporary) I love mixing music, but I don't have an ear for it. ...and I guess I'd like to be someone who isn't me for a while. I've got good hearing, I'm in good shape, and I'm trained in most varieties of modern dance. I've got some anxiety, but there's medication that helps.